Mobile collapsible ramp

ABSTRACT

A mobile collapsible ramp comprises a first plurality of blocks coupled to each other in a chain and removably affixed to the ground. A second plurality of blocks are coupled to each other in a chain and are removably affixed to the ground in spaced substantially parallel relation to the first plurality of blocks. Each of the blocks has a substantially resilient undersurface and an upper surface for accommodating a vehicle wheel.

United States Patent 1191 Hughes 1 June 28, 1974 1 MOBILE COLLAPSIBLE RAMP [75] Inventor: Jack Thomas Hughes, Powell River,

B.C., Canada [73] Assignee: The Raymond Lee Organization,

Inc., New York, NY. a part interest [22] Filed: Nov. 10, 1972 [21] Appl. N0.: 305,524

[52] US. Cl. 404/35 [51] Int. Cl. E0lc 5/16 [58] Field of Search 404/35, 36, 45, 40, 17; 14/1 [56] References Cited UNITED STATES PATENTS 324,649 8/1885 Brown 404 35 x 1,070,248 8/1913 Haldeman.... 404/17 X 1,179,487 4/1916 Williams 404/17 X 1,193,918 8/1916 Obarr ..404/17X 1,262,048 4/1918 Hoffmaster 404/45 X 1,399,043 12/1921 Belknap 404/17 X 2,181,377 11/1939 Mabie 404/l7 X 2,225,828 12/1940 Godschall r 404/35 X 3,233,893 2/1966 Meyer 404/40 X Primary ExaminerNile C. Byers, Jr. Attorney, Agent, or Firm-Daniel Jay Tick 5 7 1 ABSTRACT A mobile collapsible ramp comprises a first plurality of blocks coupled to each other in a chain and removably affixed to the ground. A second plurality of blocks are coupled to each other in a chain and are removably affixed to the ground in spaced substantially parallel relation to the first plurality of blocks. Each of the blocks has a substantially resilient undersurface and an upper surface for accommodating a vehicle wheel.

7 Claims, 9 Drawing Figures DESCRIPTION OF THE INVENTION:

The present invention relates to a mobile collapsible ramp. More particularly, the invention relates to a mobile collapsible personal boat ramp.

The principal object of the invention is to provide a mobile collapsible ramp which is of simple structure and is inexpensive in manufacture, is collapsed and positioned for use with rapidity, facility, ease and convenience, is easily and conveniently transported, and is utilizable as a personal boat ramp or a ramp for any suitable type of vehicle under any suitable circumstances.

In order that the invention may be readily carried into effect, it will now be described with reference to the accompanying drawing, wherein:

FIG. 1 is a perspective view of an embodiment of the mobile invention in use position;

FIG. 2 is a view of a pair of chains of blocks affixed to each other lengthwise;

FIG. 3 is a per spective view of an end block of the mobile collapsible ramp of the invention;

FIG. 4 is an end view of a block of the mobile collapsible ramp of the invention;

FIGS. 5 and 6 are end views of another embodiment of a block of the mobile collapsible ramp of the invention;

FIG. 7 is a view of part of a block of the mobile collapsible ramp of the invention and another embodiment of a fastening ring affixable thereto;

FIG. 8 is an end view of still another embodiment of a block of the mobile collapsible ramp of the invention; and

FIG. 9 is an end view of yet another embodiment of a block of the mobile collapsible ramp of the invention.

The mobile collapsible ramp of the invention comprises a first plurality of blocks 1, 2, 3, 4, and so on (FIG. 1). Each of the blocks has a substantially resilient undersurface 5 (FIG. 4) and an upper surface 6, 7, 8, 9, and so on, respectively (FIG. 1), for accommodating a vehicle wheel (not shown in the FIGS).

The first plurality of blocks 1, 2, 3, 4 and so on, are coupled to each other in a chain (FIG. 1) by any suitable means such as, for example, a rope 10 (FIG. 1) passing through a bore 11 (FIG. 4) formed through each block.

The first plurality of blocks 1, 2, 3, 4 and so on, are remobably affixed to the ground by any suitable means such as, for example, a substantially vertical bore 12 (FIG. 1) through each block or a ring member 13 (FIGS. 1 and 3) or 14 (FIG. 7) affixed to each block and extending from a side thereof. A spike 15 (FIGS. 1 and 3) is adapted to pass through the vertical bore 12 or the ring member 13 or 14 into the ground.

Each of asecond plurality of blocks 16, 17, 18, and so on (FIG. 1), has a substantially resilient undersurface 5 (FIG. 4) and an upper surface 19, 20, 21, and so on, respectively (FIG. 1 for accommodating a vehicle wheel (not shown in the FIGS.)

The second plurality of blocks 16, 17, 18, and so on, are coupled to each other in a chain (FIG. 1) by any suitable means such as, for example, a rope 22 (FIG. 1) passing through a bore 11 (FIG. 4) formed through each block.

2 The second plurality of blocks 16, 17, 18 and so on,

are removably affixed to the ground by any suitable means such as, for example, a substantially vertical bore 23 (FIG. 1) through each block or a ring member 24 (FIG. 1) or 14 (FIG. 7) affixed to each block and extending from a side thereof. A spike 25 (FIG. 1) is adapted to pass through the vertical bore 23 or the ring member 24 or 14 into the ground.

The first and second plurality of blocks are fastened to the ground in spaced substantially parallel relation, as shown in FIG. 1.

The upper surface of each block may be concave, as shown in FIGS. 1, 3 and 4, or may be divided into separate surfaces, as shown in FIGS. 5, 6 and 9. In the embodiment of FIGS. 5 and 6, the separate surfaces 26 and 27, and 26 and 27 are on two different levels above the ground. In the embodiment of FIG. 9, each block has a median divider 28 projecting above the upper surface between the two surfaces 29 and 30.

In the embodiment of FIGS. 5 and 6, the wheels 31 and 32 of a trailer may be accommodated on the surfaces 26 and 26, and the wheels 33 and 34 of a towing vehicle may be accommodated on the surfaces 27 and 27'.

In the embodiment of FIG. 8, each of the undersurface 35 and the upper surface 36 is concave.

FIG. 2 shows two chains of blocks 37 and 38 affixed to each other lengthwise. A wedge 39 may be placed between the chains to level the depression formed by the sloped ends of the end blocks of said chains.

I claim:

1. A mobile collapsible ramp, comprising a first plurality of blocks each having a substantially resilient undersurface and an upper surface for accommodating a vehicle wheel, each of the blocks having a bore formed therethrough;

first rope means passing through the bores and coupling the first plurality of blocks to each other in a chain;

first fastening means removably affixing the first plurality of blocks to the ground;

a second plurality of blocks each having a substantially resilient undersurface and an upper surface for accommodating a vehicle wheel, each of the blocks having a bore formed therethrough;

second rope means passing through the bores and coupling the second plurality of blocks to each other in a chain; and

second fastening means remova'bly affixing the second plurality of blocks to the ground in spaced substantially parallel relation to the first plurality of blocks.

2. A mobile collapsible ramp as claimed in claim 1, wherein each of the first and second fastening means comprises a ring member affixed to each block and extending from a side thereof and a spike adapted to pass through the ring member into the ground.

3. A mobile collapsible ramp as claimed in claim 2, wherein the upper surface of each block is concave.

4. A mobile collapsible ramp as claimed in claim 2, wherein the upper surface of each block is divided into separate surfaces.

5. A mobile collapsible ramp as claimed in claim 4, wherein the separate surfaces are on two different levels above the ground.

3,820,912 3 4 6. A mobile collapsible ramp as claimed in claim 4, of blocks and the second plurality of blocks to each wherein each block has a median divider projecting other and maintaining a Specific distance between above the upper surface between the two surfaces.

7. A mobile collapsible ramp as claimed in claim 4, themfurther comprising tie means affixing the first plurality 5 

1. A mobile collapsible ramp, comprising a first plurality of blocks each having a substantially resilient undersurface and an upper surface for accommodating a vehicle wheel, each of the blocks having a bore formed therethrough; first rope means passing through the bores and coupling the first plurality of blocks to each other in a chain; first fastening means removably affixing the first plurality of blocks to the ground; a second plurality of blocks each having a substantially resilient undersurface and an upper surface for accommodating a vehicle wheel, each of the blocks having a bore formed therethrough; second rope means passing through the bores and coupling the second plurality of blocks to each other in a chain; and second fastening means removably affixing the second plurality of blocks to the ground in spaced substantially parallel relation to the first plurality of blocks.
 2. A mobile collapsible ramp as claimed in claim 1, wherein each of the first and second fastening means comprises a ring member affixed to each block and extending from a side thereof and a spike adapted to pass through the ring member into the ground.
 3. A mobile collapsible ramp as claimed in claim 2, wherein the upper surface of each block is concave.
 4. A mobile collapsible ramp as claimed in claim 2, wherein the upper surface of each block is divided into separate surfaces.
 5. A mobile collapsible ramp as claimed in claim 4, wherein the separate surfaces are on two different levels above the ground.
 6. A mobile collapsible ramp as claimed in claim 4, wherein each block has a median divider projecting above the upper surface between the two surfaces.
 7. A mobile collapsible ramp as claimed in claim 4, further comprising tie means affixing the first plurality of blocks and the second plurality of blocks to each other and maintaining a specific distance between them. 